Guardian Metal Resources PLC Announces Pilot Mountain PFS Update & Investor Presentation

LONDON, UK / ACCESS Newswire / June 26, 2026 / Guardian Metal Resources plc (NYSE.A:GMTL)(LON:GMET)(OTCQB:GMTLF), a strategic mineral exploration company focused on tungsten in Nevada, USA, will publish the results of its Pre-Feasibility Study …